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In kvm_uncache(), turn off the PTE cache bit even after calling 

pv_changepte(). Reason: the managed() macro does not take into
account the gap in the managed pages range that may have been introduced
by the page table allocation in bootstrap().
This commit is contained in:
pk 1998-05-19 09:14:34 +00:00
parent eaf145ad5e
commit 9dae8945ef
1 changed files with 10 additions and 11 deletions
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21
sys/arch/sparc/sparc/pmap.c
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@ -1,4 +1,4 @@
/* $NetBSD: pmap.c,v 1.115 1998/05/06 14:17:53 pk Exp $ */
/* $NetBSD: pmap.c,v 1.116 1998/05/19 09:14:34 pk Exp $ */
/*
* Copyright (c) 1996
@ -6445,12 +6445,12 @@ kvm_uncache(va, npages)
if ((pte & SRMMU_PGTYPE) == PG_SUN4M_OBMEM &&
managed(pa)) {
pv_changepte4m(pvhead(pa), 0, SRMMU_PG_C);
} else {
pte &= ~SRMMU_PG_C;
setpte4m((vm_offset_t) va, pte);
if ((pte & SRMMU_PGTYPE) == PG_SUN4M_OBMEM)
cache_flush_page((int)va);
}
pte &= ~SRMMU_PG_C;
setpte4m((vm_offset_t) va, pte);
if ((pte & SRMMU_PGTYPE) == PG_SUN4M_OBMEM)
cache_flush_page((int)va);
}
setcontext4m(ctx);
#endif
@ -6465,12 +6465,11 @@ kvm_uncache(va, npages)
if ((pte & PG_TYPE) == PG_OBMEM &&
managed(pa)) {
pv_changepte4_4c(pvhead(pa), PG_NC, 0);
} else {
pte |= PG_NC;
setpte4(va, pte);
if ((pte & PG_TYPE) == PG_OBMEM)
cache_flush_page((int)va);
}
pte |= PG_NC;
setpte4(va, pte);
if ((pte & PG_TYPE) == PG_OBMEM)
cache_flush_page((int)va);
}
#endif
}